The two propaganda techniques that this sentence best represents are:
- Dehumanizing the enemy - Referring to the opponent as a "monster" suggests they are less than human and untrustworthy, which is a classic example of dehumanization.
- Ad hominem attack - This statement attacks the character of the opponent rather than focusing on their policies or qualifications, which is characteristic of an ad hominem argument.
So, the correct answers are dehumanizing the enemy and ad hominem attack.